Home / 7,621.65-11,432.35-2,075.11

Finding the Fourth Proportional to 7,621.65, 11,432.35 and 2,075.11

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Solution

The fourth proportional to 7,621.65, 11,432.35 and 2,075.11 is: 3,112.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,621.65 : 11,432.35 = 2,075.11 : x
  2. Step 2: Convert to fraction form
    7,621.65/11,432.35 = 2,075.11/x
  3. Step 3: Cross multiply
    7,621.65x = 11,432.35 × 2,075.11
  4. Step 4: Simplify right side
    7,621.65x = 23,723,383.81
  5. Step 5: Solve for x
    x = 23,723,383.81/7,621.65
  6. Step 6: Final answer
    x = 3,112.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.